Stock-Based Compensation (Summary Of The Status Of Nonvested Share Awards) (Details)	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Nonvested Share Awards [Roll Forward]
Nonvested, Shares, Beginning Balance | shares	1,120,491
Granted, Shares | shares	236,483
Vested, Shares | shares	(247,869)
Forfeited, Shares | shares	(18,367)
Nonvested, Shares, Ending Balance | shares	1,090,738
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 55.58
Granted , Weighted Average Grant Date Fair Value | $ / shares	70.82
Vested , Weighted Average Grant Date Fair Value | $ / shares	47.64
Forfeited , Weighted Average Grant Date Fair Value | $ / shares	59.80
Nonvested , Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 60.62